參數(shù)資料
型號: ISL6531CBZ
廠商: INTERSIL CORP
元件分類: 穩(wěn)壓器
英文描述: Dual 5V Synchronous Buck Pulse-Width Modulator (PWM) Controller for DDRAM Memory VDDQ and VTT Termination
中文描述: DUAL SWITCHING CONTROLLER, 325 kHz SWITCHING FREQ-MAX, PDSO24
封裝: ROHS COMPLIANT, PLASTIC, MS-013-AD, SOIC-24
文件頁數(shù): 15/17頁
文件大?。?/td> 461K
代理商: ISL6531CBZ
15
ISL6531 DC-DC Converter Application Circuit
Figure 11 shows an application circuit for a DDR SDRAM
power supply, including V
DDQ
(+2.5V) and V
TT
(+1.25V).
Detailed information on the circuit, including a complete
Billof-Materials and circuit board description, can be found
inApplication Note AN9993-of-Materials and circuit board
description, can be found in Application Note AN9993
Application Note AN9993-of-Materials and circuit board
description, can be found in Application Note AN9993.
Component Selection Notes:
C4,5,7,8,9,10,18,19 - Each 150mF, Panasonic EEF-UE0J151R
D1,2 - Each 30mA Schottky Diode, MA732
L1,2 - Each 1mH Inductor, Panasonic P/N ETQ-P6F1ROSFA
Q1,2 - Each Fairchild MOSFET; ITF86130DK8
Q3 - Fairchild MOSFET; ITF86110DK8
FIGURE 11. DDR SDRAM VOLTAGE REGULATOR
BOOT1
+5V
UGATE1
PHASE1
PVCC1
LGATE1
BOOT2
UGATE2
PHASE2
LGATE2
PGND2
PGND1
SENSE2
SENSE1
FB1
COMP1
OCSET/SD
PGOOD
VCC
GNDA
V2_SD
VREF_IN
VREF
R
19
C
18,19
150
μ
F(x2)
L
2
1
μ
H
C
7,8,9,10
150
μ
F(x4)
L
1
1
μ
H
Q
1
Q
2
Q
3
D
1
D
2
C
16
0.1
μ
F
C
6
0.1
μ
F
R
1
ISL6531
V
DDQ
@10A
V
TT
@5A
C
1
1000pF
C
2
0.1
μ
F
C
4,5
150
μ
F(x2)
C
15
0.1
μ
F
C
17
1.0
μ
F
C
26
5600pF
R
26
C
25
15000pF
R
25
100
C
27
R
20
C
30
100pF
3.48k
C
3
1.0
μ
F
1.43k
100pF
6.34k
3.01k
ISL6531
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